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                Xor-Mul棋盘                </h1>
                <p>时间限制：15s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><div>一个n*m的棋盘，左上角为(1,1),右下角为(n,m)。相邻的2点之间有连边</div>
<div>（如下图中实线）特殊地，(1,i)与(n,i)也连有一条边（如下图中虚线）,i=1..m。</div>
<div>如下图，就是一个n=3,m=4的棋盘。</div>
<div><img src="../file/4676_0.png" width="606" height="445" alt="" /></div>
<div>每个点(i,j)给定2个值a[i][j],b[i][j]。每条边e给定1个值c[e]。</div>
<div>你的任务是给每一个点一个非负的d值，最小化(S1+S2)。</div>
<div><img src="../file/4676_1.png" width="573" height="227" alt="" /></div>
<div></div>
<p></p></p><hr/><h3>输入格式</h3><p><div>第一行2个整数n,m。</div>
<div>接着n行，每行m个数，其中第i行第j个数表示a[i][j]。</div>
<div>接着n行，每行m个数，其中第i行第j个数表示b[i][j]。</div>
<div>接着n行，每行m-1个数，其中第i行第j个数表示(i,j)与(i,j+1)的边的c值。</div>
<div>接着n-1行，每行m个数，其中第i行第j个数表示(i,j)与(i+1,j)的边的c值。</div>
<div>最后一行m个数，其中第i个数表示(1,i)与(n,i)的边的c值。</div>
<div>2&lt;=n&lt;=5， 1&lt;=m&lt;=10000</div>
<div>a,b,c 的值均为不大于 10^6 的正整数</div>
<div></div>
<p></p></p><hr/><h3>输出格式</h3><p><div>一个整数，表示S1+S2的最小值</div>
<div></div>
<p></p></p><hr/><h3>样例输入</h3><pre>2 2
3 6
7 3
9 9
1 8
9 5
3 9
4 3</pre><hr/><h3>样例输出</h3><pre>49</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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